Date: Mon, 1 Mar 2010 07:24:31 +0200 From: Nikolay Denev <ndenev@gmail.com> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: freebsd-fs@freebsd.org Subject: Re: should zfs care so much about device name changes Message-ID: <B7A47488-1EF3-42DE-A2A2-BB0811F71E75@gmail.com> In-Reply-To: <20100227204715.GC2586@garage.freebsd.pl> References: <26CCAE99-B056-4754-9324-2945D1643C78@gmail.com> <272C3933-72C9-41AF-AD3A-605A7C57FB61@gmail.com> <20100227204715.GC2586@garage.freebsd.pl>
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On 27 Feb, 2010, at 22:47 , Pawel Jakub Dawidek wrote: > On Wed, Feb 24, 2010 at 03:58:58PM +0200, Nikolay Denev wrote: >>=20 >> On Feb 24, 2010, at 11:53 AM, Nikolay Denev wrote: >>=20 >>> Hello, >>>=20 >>> I wanted to test the new option ATA_CAM, but that would require a = boot from another media (USB Drive/CD) and a zpool export/import >>> to update the vdev names. (actually it's shown as "path" in the = zpool.cache file) because otherwise the system would refuse to = open/mount >>> the pool. >>> But is that really necessary given the fact that all the devices are = here, and have matching GUIDS to those in the zpool.cache file? >>> Shouldnt ZFS just import the pool?=20 >>>=20 >>> In the current state what would one have to do to for example test = ATA_CAM on a remote machine, where export/import from a rescue >>> media is not possible? >>>=20 >>> Thanks, >>> Niki >>=20 >>=20 >> I have now looked at = sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_geom.c and it seems = that when a vdev isn't found by pathname it >> is being searched by guid. But it doesn't seem to be the case here. = The loader sees the pool and boots the kernel, but then the kernel does = not see >> the pool. Any ideas? >=20 > Try adding vfs.zfs.debug=3D1 to /boot/loader.conf. This will hopefully > show what's going on. >=20 > --=20 > Pawel Jakub Dawidek http://www.wheel.pl > pjd@FreeBSD.org http://www.FreeBSD.org > FreeBSD committer Am I Evil? Yes, I Am! Sorry for the noise, it seems like it's not zfs's fault, the machine = just doesn't see any disks because I added ATA_CAM but missed atacore and atapci. I had to capture the boot screen with my camera because my USB keyboard = does not work on rootfs mount prompt and I was not able scroll up to see what's = the cause, but that's another problem that deserves another thread not in -fs. Thanks, Niki
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